Merge pull request #1727 from python-gitlab/jlvillal/mypy_strict_two_…

…steps

Enable more strict mypy checking

gitlab/v4/objects/keys.py

@@ -31,4 +31,4 @@ def get(
         server_data = self.gitlab.http_get(self.path, **kwargs)
         if TYPE_CHECKING:
             assert isinstance(server_data, dict)
-        return cast(Key, self._obj_cls(self, server_data))
+        return self._obj_cls(self, server_data)

pyproject.toml

@@ -4,9 +4,25 @@ multi_line_output = 3
 order_by_type = false
 
 [tool.mypy]
+files = "."
+
+# 'strict = true' is equivalent to the following:
+check_untyped_defs = true
 disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_decorators = true
 disallow_untyped_defs = true
-files = "."
+warn_redundant_casts = true
+warn_unused_configs = true
+warn_unused_ignores = true
+
+# The following need to have changes made to be able to enable them:
+# disallow_any_generics = true
+# disallow_untyped_calls = true
+# no_implicit_optional = true
+# no_implicit_reexport = true
+# strict_equality = true
+# warn_return_any = true
 
 [[tool.mypy.overrides]] # Overrides for currently untyped modules
 module = [